High-performance resin added to Teflon family

1972 ◽  
Vol 18 (11) ◽  
pp. 432
Keyword(s):  
High Performance ◽  
High Performance Resin

Star-shaped arylacetylene resins derived from silicon

2020 ◽  
Vol 40 (8) ◽  
pp. 676-684
Author(s):  
Niping Dai ◽  
Junkun Tang ◽  
Manping Ma ◽  
Xiaotian Liu ◽  
Chuan Li ◽  
...  
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Mechanical Test ◽  
Flexural Modulus ◽  
Mechanical Analysis ◽  
Reinforced Composites ◽  
Scanning Calorimetry ◽  
Chemical Structures ◽  
Structures And Properties ◽  
High Performance Resin

AbstractStar-shaped arylacetylene resins, tris(3-ethynyl-phenylethynyl)methylsilane, tris(3-ethynyl-phenylethynyl) phenylsilane, and tris (3-ethynyl-phenylethynyl) silane (TEPHS), were synthesized through Grignard reaction between 1,3-diethynylbenzene and three types of trichlorinated silanes. The chemical structures and properties of the resins were characterized by means of nuclear magnetic resonance, fourier-transform infrared spectroscopy, Haake torque rheomoter, differential scanning calorimetry, dynamic mechanical analysis, mechanical test, and thermogravimetric analysis. The results show that the melt viscosity at 120 °C is lower than 150 mPa⋅s, and the processing windows are as wide as 60 °C for the resins. The resins cure at the temperature as low as 150 °C. The good processabilities make the resins to be suitable for resin transfer molding. The cured resins exhibit high flexural modulus and excellent heat-resistance. The flexural modulus of the cured TEPHS at room temperature arrives at as high as 10.9 GPa. Its temperature of 5% weight loss (Td5) is up to 697 °C in nitrogen. The resins show the potential for application in fiber-reinforced composites as high-performance resin in the field of aviation and aerospace.

Composite Materials Manufacturing Processes

2011 ◽  
Vol 110-116 ◽  
pp. 1361-1367 ◽  
Author(s):  
Mohammad Reza Khosravani
Keyword(s):  
Composite Materials ◽  
High Performance ◽  
Fiber Composite ◽  
High Strength ◽  
Commercial Aircraft ◽  
Carbon Fiber Composite ◽  
Advanced Composites ◽  
Space Reduction ◽  
High Performance Resin ◽  
Vehicle Components

— Using Composite materials are growing more and more today and we have to use them in possible situation. One of the Composite materials applications is on the Airplane and aero space. Reduction of Airplane weight and more adaptability with nature are examples of benefit of using composite materials in aerospace industries. In this article process of manufacturing of composite materials and specially carbon fiber composite are explained. Advance composite materials are common today and are characterized by the use of expensive, high-performance resin systems and high-strength, high-stiffness fiber reinforcement. The aerospace industry, including military and commercial aircraft of all types, is the major customer for advanced composites. Product range now includes materials for low pressure and low temperature. Some using composite materials in aero space are as follow: Satellite Components, Thin Walled Tubing for Aircraft and Satellites, launch vehicle components and honeycomb structures.

Curing behaviors and properties of epoxy and self-catalyzed phthalonitrile with improved processability

2017 ◽  
Vol 30 (6) ◽  
pp. 710-719 ◽  
Author(s):  
Mingli Jiang ◽  
Yangxue Lei ◽  
Xiaobo Liu
Keyword(s):  
High Performance ◽  
Curing Kinetics ◽  
Adhesive Property ◽  
Thermal Stabilities ◽  
Practical Applications ◽  
Low Viscosity ◽  
System Composition ◽  
High Performance Resin ◽  
Initial Processing ◽  
Gel Transition

The curing behaviors for high-performance resin system phthalonitrile-containing benzoxazine and epoxy (BA-Ph/EP), particularly the effect of the binary system composition and processing conditions on their processabilities were investigated and discussed in this article. Results indicated that all BA-Ph/EP prepolymers exhibited low initial processing viscosity (<0.3 Pa s) and have kept stable low viscosity until gel transition. The suitable molding temperature (ranged from 150°C to 180°C) and molding time (ranged from 20 min to 80 min) could be selected for practical applications of BA-Ph/EP systems. The studies of curing behaviors and gelatinization for BA-Ph/EP systems give further understanding of the curing kinetics and guidance for the fabrication of high-performance copolymers/polymers. The introduction of EP could significantly improve the cross-linking density of BA-Ph/EP polymers, and the appropriate content of EP is the key fact for the improvement. In addition, the effects of postcuring conditions on thermal properties and the adhesive property of BA-Ph/EP polymers were monitored. The thermal stabilities and adhesive property of various polymers also showed an obvious influence with the introduction of EP. The systematic study of BA-Ph/EP system could enable a broadened industrial application, especially in the areas that require high-temperature resistance.

Rheological Behaviors Characterization and Modeling of a Novel Three-Branched Phenylethynyl-Terminated Imide Oligomer

2011 ◽  
Vol 199-200 ◽  
pp. 83-86
Author(s):  
Chang Wei Liu ◽  
Xiao Gang Zhao ◽  
Cheng Yang Wang ◽  
Xiao Hui Yu ◽  
He Jia ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Composite Material ◽  
High Performance ◽  
Resin Transfer Molding ◽  
Experimental Measurements ◽  
Melt Viscosity ◽  
Arrhenius Model ◽  
Excellent Thermal Stability ◽  
Transfer Molding ◽  
High Performance Resin

To prepare novel polyimides with enhanced thermal stability and low melt viscosity, a novel three-branched phenylethynyl-terminated imide oligomer was introduced. The oligomer can be used to prepare high performance resin-based composite material via resin transfer molding (RTM) due to its low melt viscosity (<2Pa.s) between 250°C and 320°C. The cured resin exhibits excellent thermal stability and higher glass transition temperature than PETI series as a result of the introduction of star-branched units. In this research, the rheological properties of the oligomer were measured and numerically fit with the dual Arrhenius model to predict the progression of the viscosity during cure. The calculated kinetic activation energies for gelation with two different Arrhenius equations, 120.8kJ/mol and 164kJ/mol, respectively,had some differences. The numerical results were compared with the experimental measurements, and it was found that the model predicts the experimental observations quite well.

High-performance resin-bonded magnets produced from zinc metal-coated Sm2(Fe0.9Co0.1)17Nx fine powders

1999 ◽  
Vol 75 (11) ◽  
pp. 1601-1603 ◽  
Author(s):  
K. Noguchi ◽  
K. Machida ◽  
K. Yamamoto ◽  
M. Nishimura ◽  
G. Adachi
Keyword(s):  
High Performance ◽  
Zinc Metal ◽  
Fine Powders ◽  
High Performance Resin
Sign in / Sign up

Export Citation Format

Share Document